Test Code 2HGTT Glucose Tolerance Test 2 Hour
Methodology
Photometric
Specimen Requirements
Minimum full grey-top (potassium oxalate/sodium
fluoride) tubes.
1. Fasting specimen
2. Two hour specimen
Transport refrigerated.
Patient must be fasting (8-12 hour).
Day(s) Test Set Up
Monday through Friday
Reference Values
Fasting plasma
glucose:
≤100 mg/dL
2-Hour plasma
glucose:
<140 mg/dL
Impaired glucose tolerance:
140-199 mg/dL
Provisional diabetes mellitus: >199
mg/dL
Test Classification and CPT Coding
82951
Performing Laboratory
Beebe Healthcare Laboratory
Performing Location
Margaret H. Rollins Laboratory